655fcd68c7
Fail-safe uses a periodic alarm mechanism, running from the host
thread, to manage the hot-plug events of its sub-devices. This
management requires a lot of sub-devices PMDs operations
(stop, close, start, configure, etc.).
While the hot-plug alarm runs in the host thread, the application may
call fail-safe operations, which directly trigger the sub-devices PMDs
operations as well. This call may occur from any thread decided by the
application (probably the master thread).
Thus, more than one operation can be executed to a sub-device at the
same time. This can initiate a lot of races in the sub-PMDs.
Moreover, some control operations update the fail-safe internal
databases, which can be used by the alarm mechanism at the same time.
This can also initiate races and crashes.
Fail-safe is the owner of its sub-devices and must synchronize their
use according to the ETHDEV ownership rules.
Synchronize hot-plug management by a new lock mechanism uses a mutex to
atomically defend each critical section in the fail-safe hot-plug
mechanism and control operations to prevent any races between them.
Fixes: a46f8d5 ("net/failsafe: add fail-safe PMD")
Cc: stable@dpdk.org
Signed-off-by: Matan Azrad <matan@mellanox.com>
Acked-by: Gaetan Rivet <gaetan.rivet@6wind.com>
74 lines
2.7 KiB
Makefile
74 lines
2.7 KiB
Makefile
# BSD LICENSE
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#
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# Copyright 2017 6WIND S.A.
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# Copyright 2017 Mellanox.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of 6WIND S.A. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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include $(RTE_SDK)/mk/rte.vars.mk
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# Library name
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LIB = librte_pmd_failsafe.a
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EXPORT_MAP := rte_pmd_failsafe_version.map
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LIBABIVER := 1
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# Sources are stored in SRCS-y
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SRCS-$(CONFIG_RTE_LIBRTE_PMD_FAILSAFE) += failsafe.c
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SRCS-$(CONFIG_RTE_LIBRTE_PMD_FAILSAFE) += failsafe_args.c
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SRCS-$(CONFIG_RTE_LIBRTE_PMD_FAILSAFE) += failsafe_eal.c
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SRCS-$(CONFIG_RTE_LIBRTE_PMD_FAILSAFE) += failsafe_ops.c
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SRCS-$(CONFIG_RTE_LIBRTE_PMD_FAILSAFE) += failsafe_rxtx.c
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SRCS-$(CONFIG_RTE_LIBRTE_PMD_FAILSAFE) += failsafe_ether.c
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SRCS-$(CONFIG_RTE_LIBRTE_PMD_FAILSAFE) += failsafe_flow.c
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SRCS-$(CONFIG_RTE_LIBRTE_PMD_FAILSAFE) += failsafe_intr.c
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ifeq ($(CONFIG_RTE_EXEC_ENV_LINUXAPP),y)
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CFLAGS += -DLINUX
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else
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CFLAGS += -DBSD
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endif
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# No exported include files
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# Basic CFLAGS:
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CFLAGS += -DALLOW_EXPERIMENTAL_API
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CFLAGS += -std=gnu99 -Wextra
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CFLAGS += -O3
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CFLAGS += -I.
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CFLAGS += -D_DEFAULT_SOURCE
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CFLAGS += -D_XOPEN_SOURCE=700
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CFLAGS += $(WERROR_FLAGS)
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CFLAGS += -Wno-strict-prototypes
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CFLAGS += -pedantic
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LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring
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LDLIBS += -lrte_ethdev -lrte_net -lrte_kvargs
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LDLIBS += -lrte_bus_vdev
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LDLIBS += -lpthread
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include $(RTE_SDK)/mk/rte.lib.mk
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